Telephone-system station instrument.



A. E. KEITH. TELEPHONE SYSTEM STATION INSTRUMENT. APPLIOATIQN FILED DBO. 1o. 1909.

1,077,255. Patented Oct. 28, 1913.

`IIIIIIIIIIIII I I WTTORNEY@ To 'all i maj/concern.'

. a citizen ofthe United States of .ALEXANDER EQKEIT-H, or HINsnALE,

ILIINoIs, AssInNoiajro COMPANY, or CHICAGO, ILLINots, A conronATmn or ILLINOIS,.-

TELEH'QNE-SSTEM STATIN INSTRUMENT.

Be it known that I, E.

America, and resident of Hinsdale, Eupage county, llllinois, have inv-vented ak certain new and useful Improvement in Station Instruments,

of which the following is a specification.

' employed for controlling suitable switch tions ofthe desk apparatus at the exchange or unitary or portable' structur involving' a tween th mounted. In as is obvious, tween the receiver and the remainin set, the" ordina-ry 'exi-ble cord being the o` y-medium of connection between the said receiver and the balance of the telephone set. My invention, however, as contemplated, comprises a structural connection between the receiver and transmitter, and between these elements 4and the callconnection is preferably in the nature of aI rigid handle -whereby the transmitter may be held to thev mouth and the receiver to the ear This handle also serves as the means whereby the calling mechanism may be held in one hand while the subscriber operates it with .the other; hand, as will hereinafter appear:

my lnvent-ion consists Ain matters hereinafter* eset forth and claimed.

In theaccompanying drawings Figure 1 is a. sideelevation of a transmitter, calling device and' receiver combined,

thepriniples of myV invention. Fig. '2'is a front elevation o fa section on line 2-2 of.

Fig. f1, showing the arrangement of the pushbutton vand therings controlled thereby. 3 shows dlagraminatically a l Specification of Letters Patent. Application led December 10, 190.9. Serial No. 532,423.

KEITH,

Telephone-System i tvao being disclosed in central stati-on.4 Serial No. Zt88,5 98, filed *April 8, 1909, for v; My invention contemplates! an apparatus: o'f" thisvkind in' which vices.l

.receiverare each provided with a cylindrical portion atta'ched'to the back thereof and structuralA con-f necti'pln betweeny all three of' said elements.; f In'the Vordinary desk telephone' there is, of K course-,jan electrical or "c ordf' connection bee receiver and the standard upon which the transmitter and hook switchare. suclicase there is, however, no `structural V"cc'i'nnection beporthetransmitter 'and'` mechanism are Icom-- the fl Lthe tube d is a 'whichare held in more fully.

-To the 'foregoing arid other useful endsillustrat-ing Elever 9. The catch to thev tubed by the .Patented oca-2s, 1913 substation equipped with my combined transmitter.. receiver and calling device.

lreceiver @transmitter-1a and calling device care mounted upon -the endsV of a tube composed of'any suitable material. Besides forming a support lfior-the receiver,

'transmitter and' calling device, the tube d j forms a convenient handle or My invention relates to telephone substa- 'ti'on apparatus of that kind' .in which analimechanism, such., for example, as the or inary 'and well-known rotatable dial, isi

portion. by grasped when receiver -and callwhich the apparatus 'may be use. The trai'isnaitter,

lngv devicermay be of any suitable or :rp--

AUTOMATIC ELECTRIC improvement telephone systemicalrling d'e- As: here shown, the transmitter a and pnovided-wikthila diametrical' opening to tit the ends it-the tube al.- 1 This-.form of moufntis not essential, however; as" any suitable 5 means for attach-ing, theseV devices to the tube "mayfbe used without departing --from 'the spirit of my invention.

The calling device is attached to the pro- 'Je'ctionf on-fthe back ofthe 'receiver by a screw 3 which passes through the back of ame. 4:.. -Mounted uponthe insidenof group of springs 5, 6 and 7 place by the screw 8. Opposite the springs 5,6 and 7 is an opening 1n the side of the tube to receive the lever 9. Oneend of the lever@ is pivoted'to the walls of the tube at 10, while the other end is provided with a right-angledl projection 11 which engages the end of spring 6. Y Upon the upper side of the lever 9 is aclrcular pro-h ]ection 12 forming a-pu`sh'button. When the button 12 is pressed the projection 11 forces lthespring 6 away from the spring 5 (with vwhich it is normally in engagement) and into contact with the spring 7. This pushbuttonl 12 with the -spr1ngs.5, 6 and 7 per- ;fprms the functions jswitch-that is, l-bridges'the ringer 19 across. the line con.

ductos 2Q and 21, `-tion it disconnects lishes the circuit throu of the usual hook in its normal position it and in its operated posisaid ringer and estabgh the transmitter, receiver and calling device. The ton may b'e locked in its depresse position by moving the catch 13 overthe top of the screw 13?. lIn order to 13 is'pivotally secured springs 17 and 18 (Fig.

make a call with this device the button 12 is depressed and locked; then the linger is inserted in an opening of the dial 14 corresponding to the first digit of the number of thedesired line. The dial is then rotated until the finger strikes the finger stop 15. The rotation of the dial Winds up a spring insidev the calling device, which spring is released by the linger striking the trigger 1G just before it reaches the stop 15. The un- Winding of the spring causes the rotation of a cam Which separates a pair of impulse 3) a number of times, corresponding to the digit called. The operation of the dial 14 is repeated for each of the digits of the desired number. After the conversation is completed the button 12 is simply unlocked and allowed to return to normal position. Y.

From the foregoing it Will be seen that I provide substation instruments for an automatic telephone structure in which the transmitters and receivers and calling mechanisms are embodied in structurally unitary instruments or devices. The subscriber holds the calling mechanism in one hand While he operates it With the other hand. The hand that holds the calling mechanism also holds the transmitterl and receiver. Thus, I provide an automatic switchingl apparatus of any suitable character which is responsive to a calling mechanism held in the hand of the calling subscriber, and which is structurally connected with the transmitter and receiver associated therewith. In

this Way the subscriber may 'with one and. the samey hand, and Without releasing the ceiver and calling grasp, hold in position for operation the mechanism for controlling the automatic switching apparatus, as Well as the instrumentalties for talking and listening. In other Words, there is a handle Which is common to the calling mechanism and transmitter and receiver, land by which all of these instrumentalities4 are held in position for use by the calling subscriber.

v What I claim as my invention isz- 1. In a telephone system, a receiver, a calling mechanism back of said receiver structurally connected therewith, the said receiver and calling mechanism facing 1n opposite directions, a handle for one end thereof suitably connected between the receiver and calling mechanism, and a trans mitter suitably mountedv at the other end of said handle.

2. In a telephone system, a receiver, la calling mechanism back of said receiver structurally connected therewith, the said receiver and calling mechanism facing 1n opposite directions, a handle for one end thereof suitably connected between the remechanism, a transmitter suitably mounted at the other end of said handle, and a push button on said handle for controlling a circuit'through the transmitter and calling mechanism.

Signed by me at Chicago, Cook county, Illinois,this 29th day of November, 1909.

ALEXANDER E. KEITH.

Witnesses EDWARD D. FALEs, ARTHUR J. RAY. 

